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I am giving up on Intel and have bought an AMD Ryzen 9950X3D

michael.stapelberg.ch

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Re: I am giving up on Intel and have bought an AMD Ryzen 9950X3D

#231

Post by Dunedan »

enronmusk wrote: post #119

If OP's CPU cooler (Noctua NH-D15 G2) wasn't able to cool down his CPU below 100C, he must have been (intentionally or unintentionally with Asus multi core enhancement) overclocked his CPU. Or he didn't apply thermal paste properly or didn't remove the cooler plastic sticker? I have followed his blog for years and hold him in high respect so I am surprised he has done that and expected stability at 100C regardless of…

> […] so I am surprised he has done that and expected stability at 100C regardless of what Intel claim is okay.

Intel specifies a max operating temperature of 105°C for the 285K [1]. Also modern CPUs aren't supposed to die when run with inadequate cooling, but instead clock down to stay within their thermal envelope.

[1]: https://www.intel.com/content/www/us/en/products/sku/241060/...

Re: I am giving up on Intel and have bought an AMD Ryzen 9950X3D

#232

Post by dahcryn »

ahofmann wrote: post #18
johnisgood wrote: post #8

Earlier quoted context omitted.

This does not fill me with much hope. What am I even ought to buy at this point then, I wonder. I have a ~13 years old Intel CPU which lacks AVX2 (and I need it by now) and I thought of buying a new desktop (items separately, of course), but that is crazy to me that it freezes because of the CPU going idle. It was never an issue in my case. I guess I can only hope it is not going to be a problem once I completed buil…

I wouldn't be so hopeless. Intel and AMD CPUs are used in millions of builds and most of them just work.

Indeed. I feel so weird reading this discussion section.

My home server is on a 5600G. I turned it on, installed home assistant and jellyfin etc... , and since it has not been off. It's been chugging along completely unattended, no worries.

Yes, it's in a basement where temperature is never above 21C, and it's almost never pushed to 100%, and certainly never for extended periods of time.

But it's the stock cooler, cheap motherboard, cheap RAM and cheap SSD (with expensive NAS grade mechanical hard drives).

Re: I am giving up on Intel and have bought an AMD Ryzen 9950X3D

#233

Post by steve1977 »

cjpartridge wrote: post #197

Try enabling PBO and finding a setting for the curve optimizer that works for you, each CPU is different but -10/-15 is generally achievable - should reduce temperatures across the board and potentially give you some more performance.

The problem is that stable curve optimizer settings can vary hugely across cores

I had differences of like 20 or more between different cores... i.e. one core might work fine at -20, the other maybe only at +5.

Re: I am giving up on Intel and have bought an AMD Ryzen 9950X3D

#234

Post by k4rli »

techpression wrote: post #89
whyoh wrote: post #3

It's crazy how unreliable CPUs have become in the last 5 years or so, both AMD and Intel. And it seems they're all running at their limit from the factory, whereas 10-20 years ago they usually had ample headroom for overclocking.

The 7800X3D is amazing here, runs extremely cool and stable, you can push it far above its defaults and it still won’t get to 80C even with air cooling. Mine was running between 60-70 under load with PBO set to high. Unfortunately it seems its successor is not that great :/

7900X same. System uptimes of 1month+ often and nearly always runs at 5.0Ghz. Never goes above 80c or so either.

Re: I am giving up on Intel and have bought an AMD Ryzen 9950X3D

#235

Post by steve1977 »

I tried building and running a 7950X workstation for some time. I managed to get stable settings in a modified "ECO" mode (i.e. maybe about 10% less performance, but much less power usage).

The problem is, it's a huge effort to get there. You really have to tune PBO curves for each core individually, as they can vary so much between cores.

Now the test itself is mostly automatic with tools like OCCT, but of course you have to change the settings in the BIOS between each test and you cannot use the computer during that time, so there's a huge opportunity cost. I'm talking about weeks, not days.

To cut a long story short, I sold the system and just bought a M4 Max Mac Studio now. Apple Silicon might not have the top performance of AMD or Intel, but it comes with much less headaches and opportunity cost. Which in the end probably equalizes the difference in purchase cost.

Re: I am giving up on Intel and have bought an AMD Ryzen 9950X3D

#236

Post by epolanski »

Dunedan wrote: post #231
enronmusk wrote: post #119

If OP's CPU cooler (Noctua NH-D15 G2) wasn't able to cool down his CPU below 100C, he must have been (intentionally or unintentionally with Asus multi core enhancement) overclocked his CPU. Or he didn't apply thermal paste properly or didn't remove the cooler plastic sticker? I have followed his blog for years and hold him in high respect so I am surprised he has done that and expected stability at 100C regardless of…

> […] so I am surprised he has done that and expected stability at 100C regardless of what Intel claim is okay. Intel specifies a max operating temperature of 105°C for the 285K [1]. Also modern CPUs aren't supposed to die when run with inadequate cooling, but instead clock down to stay within their thermal envelope. [1]: https://www.intel.com/content/www/us/en/products/sku/241060/...

I always wonder: how many sensors are registering that temp?

Because CPUs can get much hotter in specific spots at specific pins no? Just because you're reading 100, doesn't mean there aren't spots that are way hotter.

My understanding is that modern Intel CPUs have a temp sensor per core + one at package level, but which one is being reported?

Re: I am giving up on Intel and have bought an AMD Ryzen 9950X3D

#237

Post by Dunedan »

usr1106 wrote: post #97
formerly_proven wrote: post #43

> Looking at my energy meter statistics, I usually ended up at about 9.x kWh per day for a two-person household, cooking with induction. > After switching my PC from Intel to AMD, I end up at 10-11 kWh per day. It's kind of impressive to increase household electricity consumption by 10% by just switching one CPU.

I guess the author runs it at high load for long times, not only for the benchmarks to write this blog post. And less than 10 kWh is a low starting point, many households would be much higher.

That vastly depends where you live and what you use electricity for. Most of Europe for example uses much less energy [1], although that will probably change as heat pumps are becoming more and more widespread.

[1]: https://en.wikipedia.org/wiki/European_countries_by_electric...

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